/Engine/Source/Runtime/InteractiveToolsFramework/Public/BaseBehaviors/BehaviorTargetInterfaces.h
IHoverBehaviorTargetallows Behaviors to notify Tools/etc about device event data in a generic way, without requiring that all Tools know about the concept of Hovering.
class IHoverBehaviorTarget : public [IModifierToggleBehaviorTarget](API\Runtime\InteractiveToolsFramework\BaseBehaviors\IModifierToggleBehaviorTarget)